Question

the greatest length of the scale that can measure exactly 30 cm, 90 cm, 1 m 20 cm and 1 m 35 cm lengths is​

Answer 1

Answer:

15cm scale

Step-by-step explanation:

we have to find the greatest length.so we find the hcf of 30cm,90cm,120cm,135cm

after calculating this we get 15 cm

so the greatest lenght of scale is 15 cm.